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http://yadda.icm.edu.pl:443/baztech/element/bwmeta1.element.baztech-article-BPZ4-0019-0011

Czasopismo

Archives of Transport

Tytuł artykułu

On estimation of residual stresses in rails using shake-down based method

Autorzy Pazdanowski, M. 
Treść / Zawartość
Warianty tytułu
PL O szacowaniu naprężeń resztkowych w szynie przy pomocy teorii plastycznego przystosowania
Języki publikacji PL
Abstrakty
EN This paper presents a method, which may be used to determine residuaI stress distribution in bodies subject to cyclic loads. A mixed global/local version of the Meshless Finite Difference Method (MFDM) is used to devise a discrete computational formulation of a shakedown based residual stress calculation mechanical model for elastic-plastic bodies subject to cyclic loadings. Several 1D and 2D verification/vaIidation tests are presented, including thorough discussion of results and conclusions regarding the details of computational model. The method developed is applied to determine residual stress distribution in a railroad rail subject to simulated contact load.
PL W pracy przedstawiono metodę, która może zostać zastosowana do wyznaczenia rozkładu naprężeń resztkowych w ciałach poddanych obciążeniom cyklicznie zmiennym. Mieszana globalno/lokalna wersja Bezsiatkowej Metody Różnic Skończonych (BMRS) została zastosowana do zbudowania dyskretnego sformułowania obliczeniowego modelu mechanicznego służącego do wyznaczania rozkładu naprężeń resztkowych w sprężystoplastycznych ciałach poddanych obciążeniom cyklicznie zmiennym. Model mechaniczny oparty jest na twierdzeniach teorii plastycznego przystosowania. W pracy przedstawiono wybrane jedno- i dwuwymiarowe testy weryfikacyjne i walidacyjne, włączając dyskusję ich rezultatów i konkluzje dotyczące szczegółowych rozwiązań modelu obliczeniowego. Opracowana metoda została zastosowana do wyznaczenia rozkładu naprężeń resztkowych w szynie kolejowej poddanej symulowanym obciążeniom kontaktowym.
Słowa kluczowe
PL szacowanie naprężeń   naprężenia resztkowe   szyna kolejowa  
EN estimation of stresses   residual stresses   rails   analysis and modelling  
Wydawca Warsaw University of Technology, Faculty of Transport
Czasopismo Archives of Transport
Rocznik 2010
Tom Vol. 22, iss. 3
Strony 319--336
Opis fizyczny Bibliogr. 36 poz., rys., tab.
Twórcy
autor Pazdanowski, M.
  • Cracow University of Technology, Faculty of Civil Engineering, Warszawska 24, 31-155 Kraków
Bibliografia
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